﻿#region The MIT License
// The MIT License
// 
// Copyright (c) 2009 octalforty studios
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#endregion
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;

namespace octalforty.Chinchillin.Shared.Deployment.Resources.Impl
{
    public class FileSystemManager : IFileSystemManager
    {
        public bool FileExists(string path)
        {
            return File.Exists(path);
        }

        public Stream OpenFile(string path)
        {
            try
            {
                return File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read);
            }
            catch(IOException e)
            {
                Console.WriteLine(e.ToString());
                throw;
            } // catch
            catch(UnauthorizedAccessException e)
            {
                Console.WriteLine(e.ToString());
                throw;
            } // catch
        }

        public Stream CreateFile(string path)
        {
            try
            {
                return File.Open(path, FileMode.Create);
            }
            catch(IOException e)
            {
                Console.WriteLine(e.ToString());
                throw;
            } // catch
            catch(UnauthorizedAccessException e)
            {
                Console.WriteLine(e.ToString());
                throw;
            } // catch
        }

        public void DeleteFile(string path)
        {
            File.Delete(path);
        }

        public void CopyStream(Stream sourceStream, Stream targetStream)
        {
            const int BufferSize = 32768;
            var buffer = new byte[BufferSize];

            var bytesRead = sourceStream.Read(buffer, 0, BufferSize);

            while(bytesRead > 0)
            {
                targetStream.Write(buffer, 0, bytesRead);
                bytesRead = sourceStream.Read(buffer, 0, BufferSize);
            } // while
        }
    }
}
